Travel Behavior

Policy Considerations for Carsharing and Station Cars: Monitoring Growth, Trends, and Overall Impacts

Shaheen, Susan A.
Schwartz, Andrew
Wipyewski, Kamill
2004

Since the late-1990s, over 25 U.S. shared-use vehicle programs—including carsharing and station cars—have been launched. Given their presumed social and environmental benefits, the majority of these programs received some governmental support—primarily in the form of startup grants and subsidized parking. As of July 2003, there were a total of 15 shared-use vehicle programs, including 11 carsharing organizations, two carsharing research pilots, and two station car programs. Over the last five years, U.S. carsharing membership has experienced exponential growth.Despite this expansion, the...

Dynamics in Behavioral Response to Fuel-Cell Vehicle Fleet and Hydrogen Fueling Infrastructure

Shaheen, Susan
Martin, Elliot
Lipman, Timothy E.
2008

Transportation is a major contributor of carbon dioxide (CO2) and other greenhouse gas emissions from human activity. It accounts for approximately 14% of total anthropogenic emissions globally and about 27% in the United States. Growing concern regarding the impacts of climate change and greenhouse gas emissions has led to innovations in automotive and fueltechnology. However, behavioral response to the newest transportation technologies, such as hydrogen fuel cell vehicles (FCVs) and fueling infrastructure, is not well understood. This paper examines the results of an exploratory F-Cell...

Framework for Testing Innovative Transportation Solutions: Case Study of Carlink, a Commuter Carsharing Program

Shaheen, Susan A.
Novick, Linda
2005

Transit accounts for just two percent of total travel in the U.S. One reason for low ridership is limited access; many individuals either live or work too far from a transit station. In developing transit connectivity solutions, researchers often employ a range of study instruments, such asstated-preference surveys, focus groups, and pilot programs. To better understand response to one innovative transit solution, the authors employed a number of research tools, including: a longitudinal survey, field test, and pilot program. The innovation examined was a commutercarsharing model, called...

Fleeing from Hurricane Irma: Empirical Analysis of Evacuation Behavior Using Discrete Choice Theory

Wong, Steven D.
Pel, Adam J.
Shaheen, Susan A.
2020

This paper analyzes the observed decision-making behavior of a sample of individuals impacted by Hurricane Irmain2017(n = 645) by applying advanced methods based in discrete choice theory. Our first contribution is identifyingpopulation segments with distinct behavior by constructinga latent class choice model for the choice whether to evacuate or not. We find two latent segments distinguished by demographics and risk perception that tend to be either evacuation-keen or evacuation-reluctant and respond differently to mandatory evacuation orders.Evacuees subsequently face a multi-...

Shared Micromobility: Policy, Practices, and Emerging Futures

Shaheen, Susan A.
Cohen, Adam
Broader, Jacquelyn
2022

Shared micromobility – or short-term access to shared bikes and scooters – provides a flexible alternative for households living in urban areas, households seeking first and last-mile connections to public transportation, and those without access to a private vehicle trying to access jobs and essential services. Up until the global pandemic, shared micromobility grew worldwide on a relatively steep growth curve, beginning in the early 2010s. Shared micro-mobility is a transportation strategy that enables users’ short-term access to a transportation mode on an as-needed basis (Shaheen et al...

Carsharing Continues to Gain Momentum

Shaheen, Susan A.
2006

With auto ownership and fuel costs rising, people everywhere are seeking alternatives to private vehicle ownership. Car-sharing (or short-term vehicle rentals) provides such an alternative through hourly rates and subscription-access plans, especially for individuals and businesses in major cities with good access to other transportation modes, such as transit and carpooling.The principle of car-sharing is simple: individuals gain the benefits of private vehicle use without the costs and responsibilities of owner- ship. People involved in this typically join an organization that...

CarLink—A Smart Carsharing System

Shaheen, Susan A.
1999

CarLink is the use of short-term rental vehicles and intelligent communication and reservation technologies to facilitate shared vehicle access at transit stations or other activity centers for making local trips. CarLink vehicles, owned and operated by a transit district or third-party service provider, can be used by different drivers at many locations throughout a day. Using advanced communication and reservation system technologies, they can be reserved in advance or rented automatically upon arrival at a CarLink...

EasyConnect: Low-Speed Modes Linked to Transit Planning Project

Shaheen, Susan A. PhD
Rodier, Caroline J. PhD
2006

The EasyConnect Low-Speed Modes Linked to Transit Planning Project (TO 5113) project represents the integration of innovative strategies to enhance transit use during the development and construction of a suburban transit oriented development at the Pleasant Hill Bay Area Rapid Transit (BART) District station in the East San Francisco Bay Area. This planning project brings together a unique partnership including small technology businesses, transportation agencies, city and county government, and academia. The project components include the introduction of shared-use low speed mode...

Travinfo Evaluation Plan

Yim, Youngbin
Khattak, Asad
Miller, Mark
Hall, Randolf
1993

This document presents an evaluation plan for the TravInfo project, a field operational test of a centralized database in the San Francisco Bay Area. The TravInfo Evaluation Plan is prepared in accordance with the Mitre guidelines adopted by the Federal Highway Administration (FHWA) for IVHS Operational Test Evaluation Plans. The report consists of five major sections: introduction, traveler response component, institutional component, technology assessment, and system evaluation.

User Response to the Telephone Advisory Traveler Information System in the San Francisco Bay Area: Based on TravInfo Caller Survey Wave 1

Ygnace, Jean-Luc
Koo, Ronald
Yim, Youngbin
2000

This paper presents the findings of a survey conducted among callers of a San Francisco BayArea telephone information service. A Bay Area traveler information system, TravInfo, has beenin operation since September 1996. In April 1997, a survey of TravInfo callers was conductedover a two-week period. The paper compares the call making and demographic characteristics ofthose who asked for traffic information and of those who asked for transit information. Changesin travel behavior after the calls were made were also investigated. The key findings of the studywere that the people who called...